USRE29416E - Equipment for the continuous production of panels of synthetic material - Google Patents

Equipment for the continuous production of panels of synthetic material Download PDF

Info

Publication number
USRE29416E
USRE29416E US05/667,765 US66776576A USRE29416E US RE29416 E USRE29416 E US RE29416E US 66776576 A US66776576 A US 66776576A US RE29416 E USRE29416 E US RE29416E
Authority
US
United States
Prior art keywords
synthetic material
flow path
facing
conveyor
shaping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/667,765
Inventor
Jean-Marie Raymond Peille
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrielle de Stratifies Ste
Original Assignee
Industrielle de Stratifies Ste
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR7104913A external-priority patent/FR2126948B1/fr
Priority claimed from US00224055A external-priority patent/US3841811A/en
Application filed by Industrielle de Stratifies Ste filed Critical Industrielle de Stratifies Ste
Priority to US05/667,765 priority Critical patent/USRE29416E/en
Application granted granted Critical
Publication of USRE29416E publication Critical patent/USRE29416E/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/30—Making multilayered or multicoloured articles
    • B29C43/305—Making multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1257—Joining a preformed part and a lining, e.g. around the edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/30—Expanding the moulding material between endless belts or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/30—Expanding the moulding material between endless belts or rollers
    • B29C44/306—Longitudinally shaping, e.g. the belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/321—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed part being a lining, e.g. a film or a support lining
    • B29C44/3215—Folding devices for the lining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/326—Joining the preformed parts, e.g. to make flat or profiled sandwich laminates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

Definitions

  • the invention relates in general to an equipment for the continuous production of panels of plastic material from expandable or non-expandable resin, coated with at least one facing.
  • the conveyor device and the shaping device consist of endless belts placed above and below the plane of movement of the panel and these enable the facings to be applied onto the synthetic material. It has been found that with such equipment certain difficulties are encountered in the course of producing panels of expanded material, in particular in regard to the application of the facings onto the liquid reactant in the course of its expansion. In the known equipment it is found that the reactant expands freely between the facings immediately on leaving the first shaper.
  • the cellular material is then calibrated by the double belt conveyor assembly as indicated above, the expansion of the cellular material having taken place almost completely before entering said conveyor and shaper assembly.
  • the object of the present invention is therefore to prevent the formation of folds on the facings of panels of which the core consists of expandable or non-expandable synthetic material.
  • the invention relates to an equipment for the continuous production of panels of plastic material, the equipment being characterized in that the transporter belts which maintain the facings on the synthetic material extend up to the immediate neighbourhood of the exit of the first shaper which introduces the still liquid synthetic material and its two facings between the endless belts of a conveyor to form a holding and continuous calibrating device, a matting which is flexible and deformable in all directions being applied onto the outer face of the transporter belt which bears on the upper facing to prevent the formation of folds.
  • FIGURE An equipment according to the invention is illustrated on the single accompanying FIGURE which partially shows the working area of the equipment in accordance with the characteristics of the present invention.
  • the equipment for the continuous production of panels of synthetic material includes from beginning to end, one or a number of fixed or mobile casting heads for the distribution of the synthetic material.
  • .[.th.]. .Iadd.the .Iaddend.process shown is for obtaining panels, for instance, with a core consisting of expandable synthetic material.
  • the mixture 1 to be expanded in the form of a liquid reactant is distributed on the foil 2 designed to constitute the underneath facing of the panel.
  • the foil 2 moves continuously.
  • a second foil 3 is unrolled and applied onto the liquid reactant to constitute the upper facing of the panel.
  • the facings 2 and 3 form a sheath designed to contain the mixture during its expansion.
  • the foils 2 and 3 are drawn for example between the two surfaces 4 and 5 which are suitably profiled and constitute a first shaper to spread and shape the mixture.
  • the transporter belts 6 and 7 which are applied onto each of the faces of the facings 2 and 3 extend in a direction opposite to the direction of the movement of the material to be expanded so as to take charge of said material immediately on its leaving the profiles 4 and 5 while the mixture to be expanded is still in a liquid state.
  • the transporter belts 6 and 7 are thin and flexible and made preferably of diethylene glycol terephthalate.
  • the pressure exerted on the belt 7 is adjustable in accordance with requirements in order to ensure a tangential contact on the facing 3 in contact with the upper face 10 of the core of expanded cellular material by means of a shaping plate 8.
  • the elimination of the folds is effected by continuous shaping of the cellular synthetic material from its distribution in its liquid phase to its calibrated expansion phase.
  • This continuous shaping is obtained principally by the action of the upper transporter belt 7 which is maintained against the facing 3 by the action of a matting 9 which is flexible and deformable in all directions, the part before this matting being fixed immediately after the exit point of the profiles 4 and 5, the zone in which the cellular material is still in its liquid state.
  • the matting 9 consists with advantage of a metal wire meshing which can take up the shape of all the irregularities of the profiles whatever their shape or orientation.
  • the matting which is flexible and deformable in all directions forms, on account of the expansion of the cellular material, an inclined plane which guides the transporter belt 7 and maintains it constantly applied against the facing 3 during the expansion of the cellular material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to an equipment for the production of panels from expandable synthetic material on which a foil material is applied to act as a facing.

Description

BACKGROUND OF THE INVENTION
The invention relates in general to an equipment for the continuous production of panels of plastic material from expandable or non-expandable resin, coated with at least one facing.
DESCRIPTION OF PRIOR ART
Equipment of the manufacture of panels in particular of synthetic material of the expanded type is already known. In such equipment, means are provided to enable the synthetic material intended to become the core of the panel to be cast in the liquid state. The resin is spread over a first facing consisting of a support foil driven so as to advance at a constant speed. The resin, whether expandable or not, is then coated with a second facing which consists of a foil which simultaneously unrolls itself at the same speed as the support facing. The complex thus formed passes into a first shaping device, then into a belt conveyor where the shaping and the .[.polymeriasation.]. .Iadd.polymerization .Iaddend.of the panel takes place, these panels then being capable of being cut out and worked.
The conveyor device and the shaping device consist of endless belts placed above and below the plane of movement of the panel and these enable the facings to be applied onto the synthetic material. It has been found that with such equipment certain difficulties are encountered in the course of producing panels of expanded material, in particular in regard to the application of the facings onto the liquid reactant in the course of its expansion. In the known equipment it is found that the reactant expands freely between the facings immediately on leaving the first shaper.
The cellular material is then calibrated by the double belt conveyor assembly as indicated above, the expansion of the cellular material having taken place almost completely before entering said conveyor and shaper assembly.
In view of the fact that the surfaces are not completely planar due to longitudinal stresses in the foils constituting the facings, folds have a tendency to appear at the point of contact of the panel obtained with the belts of the conveyor and with the calibrating plates which are applied onto the inner face of said calibrating belts.
Pockets of gas form inside the folds which degrade the cellular matter.
SUMMARY OF THE INVENTION
The object of the present invention is therefore to prevent the formation of folds on the facings of panels of which the core consists of expandable or non-expandable synthetic material. To this end the invention relates to an equipment for the continuous production of panels of plastic material, the equipment being characterized in that the transporter belts which maintain the facings on the synthetic material extend up to the immediate neighbourhood of the exit of the first shaper which introduces the still liquid synthetic material and its two facings between the endless belts of a conveyor to form a holding and continuous calibrating device, a matting which is flexible and deformable in all directions being applied onto the outer face of the transporter belt which bears on the upper facing to prevent the formation of folds.
BRIEF DESCRIPTION OF THE DRAWING
An equipment according to the invention is illustrated on the single accompanying FIGURE which partially shows the working area of the equipment in accordance with the characteristics of the present invention.
GENERAL DESCRIPTION OF PREFERRED EMBODIMENT
According to the invention, as is illustrated on the accompanying drawing, the equipment for the continuous production of panels of synthetic material includes from beginning to end, one or a number of fixed or mobile casting heads for the distribution of the synthetic material. In the example illustrated, .[.th.]. .Iadd.the .Iaddend.process shown is for obtaining panels, for instance, with a core consisting of expandable synthetic material.
The mixture 1 to be expanded in the form of a liquid reactant is distributed on the foil 2 designed to constitute the underneath facing of the panel. The foil 2 moves continuously. A second foil 3 is unrolled and applied onto the liquid reactant to constitute the upper facing of the panel. The facings 2 and 3 form a sheath designed to contain the mixture during its expansion. The foils 2 and 3 are drawn for example between the two surfaces 4 and 5 which are suitably profiled and constitute a first shaper to spread and shape the mixture.
According to the present invention, the transporter belts 6 and 7 which are applied onto each of the faces of the facings 2 and 3 extend in a direction opposite to the direction of the movement of the material to be expanded so as to take charge of said material immediately on its leaving the profiles 4 and 5 while the mixture to be expanded is still in a liquid state.
According to another characteristic of the invention, the transporter belts 6 and 7 are thin and flexible and made preferably of diethylene glycol terephthalate.
The pressure exerted on the belt 7 is adjustable in accordance with requirements in order to ensure a tangential contact on the facing 3 in contact with the upper face 10 of the core of expanded cellular material by means of a shaping plate 8.
It is at the point of contact of the upper shaping plate 8 with the facing 3 that sometimes, in the known devices, folds form which cause the appearance of gas pockets which are difficult to eliminate with any fold remover or discontinuous shaper.
According to a characteristic of the present invention, the elimination of the folds is effected by continuous shaping of the cellular synthetic material from its distribution in its liquid phase to its calibrated expansion phase.
This continuous shaping is obtained principally by the action of the upper transporter belt 7 which is maintained against the facing 3 by the action of a matting 9 which is flexible and deformable in all directions, the part before this matting being fixed immediately after the exit point of the profiles 4 and 5, the zone in which the cellular material is still in its liquid state.
The matting 9 consists with advantage of a metal wire meshing which can take up the shape of all the irregularities of the profiles whatever their shape or orientation.
The matting which is flexible and deformable in all directions forms, on account of the expansion of the cellular material, an inclined plane which guides the transporter belt 7 and maintains it constantly applied against the facing 3 during the expansion of the cellular material.
On completion of the expansion of the cellular material introduced between the facings 2 and 3 by the transporter belts 6 and 7 it is then guided between two horizontal calibrating plates 8 and 81, the distance apart of which being adjustable in accordance with the thickness required for the panel of expanded material.
Contact between the plates 8, 81 and the facings of the material is established between the parallel faces of said plates, the angel β between the contact phase of plate 8 and the cellular matter being as small as possible.
By this means, the formation of folds on the facing 3 is made impossible between the input extremity of the matting 9 and the point of contact of the shaping plates 8 and 81, given that the free space between the extremity of the matting and the plates is infinitely small.
It is obvious that the invention is not limited by the example of its application hereinabove described and illustrated and that on the basis of it other forms and modes of application can be envisaged within the scope of the invention.

Claims (1)

  1. What I claim is: .[.1. An apparatus for the continuous manufacture of panels comprised of expanded synthetic material of the type where a facing is applied to each side of the synthetic material comprising a flow path along which said panels are manufactured, means for supplying said upper and lower facings in continuous sheets along said flow path, means for depositing said synthetic material between said sheets while it is substantially in its liquid phase, first means for shaping said synthetic material, said first means being disposed in contact with each of said facing sheets and having an outlet through which said facing sheets pass, second means for shaping said synthetic material, said second means comprising first and second conveyor bands which are disposed above and below said flow path and which are in engagement with said upper and lower facing, said bands extending downstream from said outlet of said first means so that as said synthetic material expands its shape is maintained by said conveyor bands, and a flexible mesh form belt, the downstream end portion of said belt being deformable in all directions, said belt being applied to the outer surface of the conveyor band above said flow path to prevent the formation of pockets and folds between the facings sheets and the expanded synthetic material..]. .[.2. An apparatus as defined in claim 1 including first and second shaping plates disposed above and below said upper and lower conveyor bands and in contact therewith, said flexible mesh form belt extending from substantially the entrance of said facing sheets into said conveyor bands to said shaping plate disposed above said upper conveyor, the upstream portion of said flexible mesh form belt overlying that part of said flow path where said synthetic material is still in its liquid state, the downstream portion of said flexible mesh form belt overlying that part of said flow path where the synthetic material is undergoing expansion, and the distance between the downstream end of said flexible mesh form belt and the upstream end of said shaping plate disposed above said conveyor is as small as possible to reduce the angle between the contacting face of said shaping plate and the facing sheet in contact therewith so that pockets and folds cannot form between said flexible mesh form belt and said shaping plate..]. .Iadd. 3. An apparatus for the continuous manufacture of panels comprised of expanded synthetic material of the type where a facing is applied to the upper and lower sides of the synthetic material comprising a flow path along which said panels are manufacture, means adjacent said flow path for supplying said upper and lower facings in continuous sheets along said flow path, means adjacent said supplying means for depositing said synthetic material between said sheets while said synthetic material is substantially in its liquid phase, first means for shaping said synthetic material, said first means being disposed in contact with each of said facing sheets and having an outlet through which said facing sheets pass, second means for shaping said synthetic material, said second means comprising first and second conveyor bands which are disposed above and below said flow path and which are in engagement with said upper and lower facing, said bands extending downstream from said outlet of said first means so that as said synthetic material expands, its shape is maintained by said conveyor bands, first and second shaping plates disposed above and below said upper and lower conveyor bands and in contact therewith, a flexible mesh form belt being applied to the outer surface of said first conveyor band, said belt extending from substantially the entrance of said facing sheets into said conveyor bands to said shaping plate disposed above said upper conveyor, the upstream portion of said flexible mesh form belt overlying that part of said flow path where said synthetic material is still in its liquid state, the downstream portion of said flexible mesh form belt being deformable in all directions and overlying that part of said flow path where the synthetic material is undergoing expansion, and the distance between the downstream end of said flexible mesh form belt and the upstream end of said shaping plate disposed above said conveyor is as small as possible to reduce the angle between the contacting face of said shaping plate and the facing sheet in contact therewith so that pockets and folds cannot form between said flexible mesh form belt and said shaping plate.
US05/667,765 1971-02-12 1976-03-17 Equipment for the continuous production of panels of synthetic material Expired - Lifetime USRE29416E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/667,765 USRE29416E (en) 1971-02-12 1976-03-17 Equipment for the continuous production of panels of synthetic material

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7104913A FR2126948B1 (en) 1971-02-12 1971-02-12
FR71.04913 1971-02-12
US00224055A US3841811A (en) 1972-02-07 1972-02-07 Equipment for the continuous production of panels of synthetic material
US05/667,765 USRE29416E (en) 1971-02-12 1976-03-17 Equipment for the continuous production of panels of synthetic material

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US00224055A Reissue US3841811A (en) 1971-02-12 1972-02-07 Equipment for the continuous production of panels of synthetic material

Publications (1)

Publication Number Publication Date
USRE29416E true USRE29416E (en) 1977-09-27

Family

ID=27249495

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/667,765 Expired - Lifetime USRE29416E (en) 1971-02-12 1976-03-17 Equipment for the continuous production of panels of synthetic material

Country Status (1)

Country Link
US (1) USRE29416E (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242409A (en) 1978-12-01 1980-12-30 Shelter Insulation, Inc. Process for crimping a non-woven mat and foam structure produced therewith
DE3329616A1 (en) * 1982-08-20 1984-03-01 Rolf E. 16103 New Castle Pa. Berner DEVICE FOR CONTINUOUS SHAPING OF POLYSTYRENE

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065500A (en) * 1958-12-11 1962-11-27 Wmb Internat A B Method and apparatus for making coherent bodies from expandable granules of thermoplastic
US3080613A (en) * 1960-01-28 1963-03-12 Gen Motors Corp Method of molding a polyurethane foam object having a relatively flat top surface
US3240846A (en) * 1962-08-06 1966-03-15 Allied Chem Method and apparatus for preparing polyurethane foam sandwich structure
US3258812A (en) * 1964-07-30 1966-07-05 Specialty Converters Casting belt for foam making apparatus
US3298888A (en) * 1965-08-12 1967-01-17 United States Gypsum Co Production of ribbed building board
US3377652A (en) * 1964-09-24 1968-04-16 Nylonge Corp Apparatus for the production of artificial sponge
US3423492A (en) * 1965-02-05 1969-01-21 Olof Jonell Method and machine for the manufacture of lengthened objects of concrete
US3537929A (en) * 1964-06-09 1970-11-03 Donald G Keith Process for producing molded shape foam laminates
US3553300A (en) * 1968-07-10 1971-01-05 Tenneco Chem Process for controlling the upper surface contour of foamable polyurethane during expansion in an open top mold
US3775522A (en) * 1970-04-16 1973-11-27 Rhone Poulenc Sa Method for the manufacture of slabs of expanded foam free of longitudinal corrugations

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065500A (en) * 1958-12-11 1962-11-27 Wmb Internat A B Method and apparatus for making coherent bodies from expandable granules of thermoplastic
US3080613A (en) * 1960-01-28 1963-03-12 Gen Motors Corp Method of molding a polyurethane foam object having a relatively flat top surface
US3240846A (en) * 1962-08-06 1966-03-15 Allied Chem Method and apparatus for preparing polyurethane foam sandwich structure
US3537929A (en) * 1964-06-09 1970-11-03 Donald G Keith Process for producing molded shape foam laminates
US3258812A (en) * 1964-07-30 1966-07-05 Specialty Converters Casting belt for foam making apparatus
US3377652A (en) * 1964-09-24 1968-04-16 Nylonge Corp Apparatus for the production of artificial sponge
US3423492A (en) * 1965-02-05 1969-01-21 Olof Jonell Method and machine for the manufacture of lengthened objects of concrete
US3298888A (en) * 1965-08-12 1967-01-17 United States Gypsum Co Production of ribbed building board
US3553300A (en) * 1968-07-10 1971-01-05 Tenneco Chem Process for controlling the upper surface contour of foamable polyurethane during expansion in an open top mold
US3775522A (en) * 1970-04-16 1973-11-27 Rhone Poulenc Sa Method for the manufacture of slabs of expanded foam free of longitudinal corrugations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242409A (en) 1978-12-01 1980-12-30 Shelter Insulation, Inc. Process for crimping a non-woven mat and foam structure produced therewith
DE3329616A1 (en) * 1982-08-20 1984-03-01 Rolf E. 16103 New Castle Pa. Berner DEVICE FOR CONTINUOUS SHAPING OF POLYSTYRENE

Similar Documents

Publication Publication Date Title
US3018205A (en) Cellular structure and method of manufacture
US4622190A (en) Method of making wet process panels of composite wood material with semi-matching contoured pressure plates
US2670026A (en) Apparatus for making honeycomb cores for sandwich-type structures
US3841811A (en) Equipment for the continuous production of panels of synthetic material
USRE29416E (en) Equipment for the continuous production of panels of synthetic material
US4726881A (en) Method of making wet process panels of composite wood material with semi-matching contoured pressure plates
US3880559A (en) System for the continuous manufacture of panels of synthetic material
SU605533A3 (en) Device for continuous production of foam plastic sheets
US3308597A (en) Grid-like article and apparatus for and method of making same
US3382133A (en) Means for corrugating webs transversely
US3777347A (en) Panel forming machine
US2348433A (en) Corrugated fibrocement slab
JPS5924490Y2 (en) Composite board manufacturing equipment
SU548197A3 (en) Apparatus for continuous production of laminated panels
JPS5936416Y2 (en) Manufacturing equipment for composite materials consisting of a hard surface material and a synthetic resin foam layer
FR2142752A1 (en) Partially corrugated board mfr - by continuous extrusion of plastic material through a novel die
JPS63190649A (en) Apparatus for preparing corrugated board-shaped catalyst
JPS629091Y2 (en)
JPS6363367B2 (en)
JPS6157192B2 (en)
EP1592526B1 (en) Method and apparatus for continuous manufacturing of curved insulating panels
US4087310A (en) Device for interconnecting plates to be covered by foamed material
JPS6327214A (en) Equipment for manufacturing composite sheet
JPS60171157A (en) Production unit for sandwich board
US20080237918A1 (en) Production of a creped material for connections and transitions on buildings